Bill Gates has just been approved by the North Dakota Department of Agriculture to purchase 2,100 acres worth $13.5M.

Bill Gates made his fortune working in technology, but now he is betting big on farmland.

Gates obtained legal approval last week to purchase 2,100 acres from Campbell Farms, a northeastern North Dakota potato farmer.

This is not the first time Gates has made an investment in this asset class.

Gates, who has nearly 270,000 acres of farmland spread across several states, is the largest private owner in America of farmland.

Let's have a closer look at approval.

Initial concerns about Gates' purchase in North Dakota of farmland were raised by a Depression-era law that prohibits corporations or limited liability companies from purchasing farmland.

North Dakota's Agriculture Commissioner Doug Goehring stated previously to KFYR TV -- 

a station in Bismarck (North Dakota) -- that the news was not well received by many.

Bill Gates made his fortune working in technology, but now he is betting big on farmland.

The North Dakota Attorney General sent a letter on Wednesday stating that the purchase was in compliance with the law.